Improvement in combined alarm-locks and door-bells



J.` RICHARDSON. COMBINED ALARM-LOCK ANpDo-oR-BELL. No.176,`685. Patente@ Apri125,1a7e.

'lIlllllllllllllllmlllllllll UiNrTRD STATES! PATENT FFICE.

` JEFFERs RIoHARDsON, OF sTooKBRIDeE, VERMONT.

IMPROVEMENT IN COMBINED ALARM-LOCKS AND DOOR-BELLS.

Specification forming part of Letters Patent No. 176,685, dated April 25, 1876; 'application tiled February 17, v1876.

To all whom it may concern:

Beit known that I, JEFFERs RICHARDSON, ofvStockbridge, in the county of Windsor and State of Vermont', have invented an Improved Combined Lock and Door-Bell, of which the following is a specification:

In the accompanying' drawings, forming a part of this specification, Figure 1 represents a side view of the lock with one side of its casingremoved-and its bolt projected. Fig. 2 represents a similar view, showing the bolt retracted.- igs. 3 and 4 represent sections on the planes of lines a' w and 'y y, Fig. 1; and Fig. 5 represents a side view ofthe bell-striking mechanism.

My invention has for its object to combine a s pringlock with a door-bell in such manner that the bell shall be rung either by the operation ofthe lock as an alarm, or independently ofthe lock as a door-bell.

To this end my invention consists in the combination and arrangement of parts whereby a door-bell is rung either by the operation of retracting the bolt of a springlock or independently of said operation, as I will now proceed to describe, and point out in my claims.

In the drawings, A represents the casing of the lock, which, in the present instance, is of the mortise pattern and B, the lockbolt, which is projected by the spring C. D represents a slide-bar'for operating the bolt. This bar is entirely inclosed in the casing A, and is adapted to be moved longitudinally between guides g g, as hereinafter described. The lockbolt B is provided with a downwardly-projecting shoulder, b, at its rear end, against which the roar end of the operating-bar abuts when moved backwardly by the means hereinafter described, the lock-bolt being operated without being touched by the key. The operating. bar is held in the `position shown in Fig. l by two springs, E and F, which are suitably attachedA to the lock-casing at E and F', the former holding the bar with a forward yielding pressure against the front plate of the lock-casing, while the latter exerts a downward yielding pressure, and en gages at its free end with a shoulder, H, which projects laterally from-'the bar, the lat-ter being thus locked or prevented from being moved backwardly. J represents a key, and K a shaft, the two operating the lock-bolt B through the intermediate operating-bar D. The key J is removable like an ordinary key, and is inserted and removed through a key-hole, L, while the shaft K is preferably a permanent attachment, and constitutes a part of the belLringing attachment hereafter described. This shaft K extends transversely through the lock, is provided on its outer end with a crank or handle whereby it may be operated from the outside of the door, and at its middle portion within the lock with one or more short arms, O O. The key J and shaft K are so located with reference to theoperatingbar that `they can only act on said bar successively, the action of the key J being necessary to bring the operating-bar into a position where it" can be bar the motion necessary to enable it to retract the lock-bolt. The key J, when in position inv the lock, is located under a shoulder,

I, on the lower side of the operating-bar, and this shoulder is located under the outer end of the locking-spring F. The bit of the key J is provided with two operating faces or edges, l 2, the former being farther from the axis of the key, and thereforel having a longer radius than the latter. When the key is turned in the direction of the arrow, Fig. 1, the edge 1 strikes the locking-spring F and raises it above the shoulder H, thus leaving theoperatingbar free to be moved backward by the pressure of the edge 2 against the shoulder I. The key J is adapted only to force the operating-bar backwardly until its rear end comes nearly or quite in contact with the shoulder b of the lock-bolt. When the Operating-bar is in this position a shoulder, N, on its lower side is within the radius of the arms O O of the shaft K, either of which arms is adapted to engage with the shoulder N of the operatingbar and force said bar backward far enough to cause it to retract the lock-bolt and unlock the door when the shaft K is turned.4 P vrepresents a device for operating the ,lock-bolt B from the inside of the door, and for fastening said bolt in a projected or a retracted position. This device is composed of a key, which is, preferakey being journaled in an escutcheon or plate, B, which is attached to the door.

The inner end of the key, within the lock, p

is provided with a bit, S. `The lock-bolt B is provided with a recess, T, into which the key P and its bit S project, the recess being of such width as to permit the key to be turned therein, so as to bring its bi-t S from a vertical to a horizontal position, the outer end of the bit bearing against one or the other of the sides of the recess when in the latter position, as shown in dotted lines in Figs. 1 and 2. When the lock-bolt is projected, and the key I? is turned, so as to Acause the 'end of its bit to bear against the side of the recess nearest the front of the lock, as in Fig. 1, the bolt is held firmly in its projected position, and can not be retracted until the key I? is turned, and as the latter can only be operated from the inside of the door it follows that a person on the outside cannot unlock the door so long asthe key P locks the bolt. When the key P is turned in the opposite direction it bears against the side of the recess nearest the back of the lock and forces the lock-bolt back wardly in -the same manner that the shaft K does, and when the bolt is entirely retracted the bit of the key P locks the bolt in this position, as

y shown in Fig. 2, 'unless it is turned bythe operator, so as to release the bolt. The key P therefore performs the ofce of locking the lock-bolt in either of its two positions, as Well as aording means for retractin g the lock-bolt and unlocking the door from the inside. When occupying a vertical position the bit\S does not interfere in any way with the action of the lock-bolt.

A cheap and simple spring-lock is thus nro' duced which cannot be easily operated by one not familiar with its construction, and is particularly adapted to the combined lock-alarm and door-bell attachment, which will now be described.

AThe shaft K, which I have before alluded to as being preferably a part of the bell-ringing mechanism, extends entirely through the loek'and projects beyond the inner side ofthe door, its inner end being provided with two short arms, a a, which radiate therefrom in opposite directions, these arms being preferably formed on a collar, which is' suitably secured to the shaft K. c is a plate, which is rigidly secured to the inner side of the door, said plate preferably having an oriiiee through which the shaft K passes, although if desired it may be entirely separate from the shaft. d represents a rocking plate, which is pivoted to the plate c. The rocking plate is prefer ably. seniicircular in its outline, and is provided with lugs or hooks c e at points on opposite sides of its pivot, which form abutments for the ends of a wire, f, the middle of the latter being wound spirally around a post, g, projecting from the plate c, the spiral portion of the wire constituting a spring -whieh holds the ends of the wire with a yielding pressure against the lugs e e. The ends of the wire f are provided with hammers or heads h lz.. i t' represent stationary stops or vabutments projecting from the plate c, and acting to hold thev ends of the wire anti the 'rocking plate d in the. position shown in Fig. 5. The rocking plate is provided on its periphery, at a point about midway between the\lugs e e, with a projection,j, which is adapted' to engage with one or the other of the arms a a of the shaft K. Zrepresents a gong or bell secured to a post, m, which projects from the plate c. The bell is so located that either of the hammers h h will strike it when they are operated, as will now be explained. When the shaft K is revolved in either direction, one of its arms a, engaging with the project-ion j on the rocking plate d, tilts the plate on its pivot in one direction 'or the other, this motion of the plate raising one end of the wire f, with its halnmer against -the tension of the spring, and leaving the other end of the wire supported by one of the stationary abutments t'. When the shaft K is turned so far as to cause its arms a to pass by the projection j and release the rocking plate, the wire f ies back, forcing the .plate to its former position and striking the bell sharply with its hammer. This effect is produced by rotating the shaft K in either direction, as before intimated.

From the foregoing it will be readily seen that by my invention an efhcient spring-lock is produced, and an alarm apparatus, which must be operated by the retraction ot' the lock-bolt, and is adapted to be operated as a door-bell, independently of the look, the rot-ation of the shaft K being necessary to both operations.

My invention is applicable either to a mortise-1ock, as shown in the drawings, or to an outside lock, in which case the bell and strik ing apparatus will be attached directly to the lock-casing.

I claim as my inventionl l. In a spring-lock, the combination of the lock-bolt B, having shoulder b, operating-bar D, having shoulders I N, key J, shaft K, having arms O O and a a, and a bell-ringing mechanism, adapted to be operated by the rotation of the shaft, all substantially as described.

2. In a spring-lock, the shaft K, having arms O O within the lock-casing, and arms a a on the outside of the lock-casing, combined with and adapted to operate the lock mechanism, andan external bell-ringing mechanism, substantially as described,

The shaft K, adapted to operate the mechanism inside of the lock, and provided with the arms a to on the outside of the lock, combined with the pivoted rocking plate d, adapted to operate the two hammers lz, It, substantially as described.

In testimony whereof I have signed my naine to this specification inthe presence of two subscribing witnesses.

JE FFERS RICHARDSON.

Witnesses:

J oEL BLAGKMER, M. M. Woon. 

